HEENEY - The driver of a semi-truck died after his truck rolled over in Heeney, which is just north of Silverthorne, on Sept. 10.
The crash happened on Highway 9 at milemarker 122.
Evidence shows he was driving northbound in his Kenworth tractor and trailer when he went off the right side of the roadway for an unknown reason. However, driver fatigue or possible medical conditions are suspected.
The truck collided with a guardrail before traveling up a steep embankment. The truck and trailer overturned and came to a stop blocking both lanes of Highway 9.
The driver was pronounced dead on scene by the Summit County Chief Deputy Coroner. The cause of the wreck is still under investigation.
The driver's identity has not been released.
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